Vertebrates have well-developed organ systems including digestive, circulatory, and nervous systems.

Gas exchange systems include lungs and gills.

Humans have two-chambered hearts.

Different types of teeth are used to process different diets.

Mammals have gizzards and pouches that help them store and break up food.

Is the way an organism reacts to other organisms or to its environment.

A complex pattern of innate behaviors is called

Modified behavior so that a response to one stimulus becomes associated with a different stimulus.

Is the ability of certain living things to give off light.

It is a chemical that is produced by one animal and influences the behavior of another animal of the same species.

Select the option that best labels the diagram of a nucleotide.

What is the phenotype of the bottom flower?

What is the genotype of the top flower?

Select the option with the correct order of the levels of organization.

Which includes both an abiotic and biotic factor?

Which action recycles yard waste and kitchen waste?

Which is a sustainable action?

Which government agency monitors the health of the environment and works to reduce human impacts?

Which is a renewable resource?